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Sewage sludge carbonization for biochar applications: the fate of heavy metals

Sam Van Wesenbeeck, Wolter Prins UGent, Frederik Ronsse UGent and Michael Jerry, Jr Antal (2014) ENERGY & FUELS. 28(8). p.5318-5326
abstract
Biochars produced from sewage sludge show promise for use as soil amendments that could both enhance plant growth and sequester carbon. In a previous study, we showed that moist sewage sludge obtained from a rural, residential region of Oahu, Hawaii, could be carbonized, and the heavy-metal content of its biochar did not exceed United States EPA regulations limiting its use as a soil amendment. In this paper, we show that biochars produced from the nearby residential community of Hawaii Kai cannot be used as a soil amendment in Hawaii because their contents of Zn, Mo, and Cr exceed state regulations. Likewise, their contents of Cd, Cu, Ni, and Zn exceed Belgian regulations. These heavy metals are retained in the biochar during carbonization, whereas Hg and (to a lesser extent) As, Cd, and Se are released and thereby depleted in the biochar. Biochar within the carbonizer does not adsorb the heavy metals which are released during pyrolysis; consequently, these leave the carbonizer in its exhaust stream.
Please use this url to cite or link to this publication:
author
organization
year
type
journalArticle (original)
publication status
published
subject
keyword
PYROLYSIS PROCESS, SLOW PYROLYSIS, INORGANIC ELEMENTS, BIOCARBON PRODUCTION, CONTAMINATED BIOMASS, EMISSION CHARACTERISTICS, THERMOCHEMICAL CONVERSION, FLASH CARBONIZATION, WASTE-WATER SLUDGE, CCB-TREATED WOOD
journal title
ENERGY & FUELS
Energy Fuels
volume
28
issue
8
pages
5318 - 5326
Web of Science type
Article
Web of Science id
000340808800054
JCR category
ENGINEERING, CHEMICAL
JCR impact factor
2.79 (2014)
JCR rank
21/135 (2014)
JCR quartile
1 (2014)
ISSN
0887-0624
DOI
10.1021/ef500875c
project
Biotechnology for a sustainable economy (Bio-Economy)
language
English
UGent publication?
yes
classification
A1
copyright statement
I have transferred the copyright for this publication to the publisher
id
4427036
handle
http://hdl.handle.net/1854/LU-4427036
date created
2014-06-23 17:14:33
date last changed
2016-12-19 15:47:04
@article{4427036,
  abstract     = {Biochars produced from sewage sludge show promise for use as soil amendments that could both enhance plant growth and sequester carbon. In a previous study, we showed that moist sewage sludge obtained from a rural, residential region of Oahu, Hawaii, could be carbonized, and the heavy-metal content of its biochar did not exceed United States EPA regulations limiting its use as a soil amendment. In this paper, we show that biochars produced from the nearby residential community of Hawaii Kai cannot be used as a soil amendment in Hawaii because their contents of Zn, Mo, and Cr exceed state regulations. Likewise, their contents of Cd, Cu, Ni, and Zn exceed Belgian regulations. These heavy metals are retained in the biochar during carbonization, whereas Hg and (to a lesser extent) As, Cd, and Se are released and thereby depleted in the biochar. Biochar within the carbonizer does not adsorb the heavy metals which are released during pyrolysis; consequently, these leave the carbonizer in its exhaust stream.},
  author       = {Van Wesenbeeck, Sam and Prins, Wolter and Ronsse, Frederik and Antal, Michael Jerry, Jr},
  issn         = {0887-0624},
  journal      = {ENERGY \& FUELS},
  keyword      = {PYROLYSIS PROCESS,SLOW PYROLYSIS,INORGANIC ELEMENTS,BIOCARBON PRODUCTION,CONTAMINATED BIOMASS,EMISSION CHARACTERISTICS,THERMOCHEMICAL CONVERSION,FLASH CARBONIZATION,WASTE-WATER SLUDGE,CCB-TREATED WOOD},
  language     = {eng},
  number       = {8},
  pages        = {5318--5326},
  title        = {Sewage sludge carbonization for biochar applications: the fate of heavy metals},
  url          = {http://dx.doi.org/10.1021/ef500875c},
  volume       = {28},
  year         = {2014},
}

Chicago
Van Wesenbeeck, Sam, Wolter Prins, Frederik Ronsse, and Michael Jerry Antal Jr. 2014. “Sewage Sludge Carbonization for Biochar Applications: The Fate of Heavy Metals.” Energy & Fuels 28 (8): 5318–5326.
APA
Van Wesenbeeck, S., Prins, W., Ronsse, F., & Antal, M. J., Jr. (2014). Sewage sludge carbonization for biochar applications: the fate of heavy metals. ENERGY & FUELS, 28(8), 5318–5326.
Vancouver
1.
Van Wesenbeeck S, Prins W, Ronsse F, Antal MJ Jr. Sewage sludge carbonization for biochar applications: the fate of heavy metals. ENERGY & FUELS. 2014;28(8):5318–26.
MLA
Van Wesenbeeck, Sam, Wolter Prins, Frederik Ronsse, et al. “Sewage Sludge Carbonization for Biochar Applications: The Fate of Heavy Metals.” ENERGY & FUELS 28.8 (2014): 5318–5326. Print.